Samsung says its mixed-reality device, currently codenamed Project Moohan, 'blends everyday utility with immersive new experiences.' We'll see what that means next week. Samsung has scheduled a Galaxy event for next week, where it will finally unveil the wearable it has been teasing for almost a year. The Oct. 21 livestream will introduce "a new era of multimodal AI and unveil Project Moohan, the first product built for the open and scalable Android …